Secure firmware interface
US11455394B2 · kind B2 · utility
0Cited by
9References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2018 |
| Grant date | Sep 27, 2022 |
| Priority date | — |
| Expiry date | Aug 27, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3271
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A mailbox mechanism is used for communication of secure messages from a server to the firmware of a device. Mailbox content provided by the server is authenticated in a driver execution environment of the device, using reboots across the communication sessions, and then stored in secure storage. The communication sessions include first receiving a signed server key, and then receiving a message from the server that is based on a hash of a nonce generated by the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.